1.JdbcTemplate的 批量增加、修改、删除操作
均由JdbcTemplate 的 batchUpdate 方法实现
该方法有两个参数：
参数一：sql（操作对应的sql语句）
参数二：List集合，添加多条记录数据
一、批量添加操作
//1.编写bookDao接口
public interface bookDao {
//批量添加操作
void batchAddbooks(List<Object[]> batchAddlist);
}
//2.编写接口实现类bookDaoImple
@Repository
public class bookDaoImple implements bookDao{
//注入JdbcTemplate
@Autowired
private JdbcTemplate jdbcTemplate;
//批量添加操作
@Override
public void batchAddbooks(List<Object[]> batchAddlist) {
String sql = "insert into book values(?,?,?)";
int[] ints = jdbcTemplate.batchUpdate(sql, batchAddlist);
System.out.println(ints);
}
}
//3.编写service类
@Service
public class bookService {
//1.注入dao
@Autowired
private bookDao bookdao;
//实现批量添加
public void batchAddbook(List<Object[]> batchAddlist){
bookdao.batchAddbooks(batchAddlist);
}
}
//4.编写测试类
//批量添加
List<Object[]> batchAddlist = new ArrayList<>();
Object[] o1 = {
"5","aaa","a"};
Object[] o2 = {
"6","bbb","b"};
Object[] o3 = {
"7","ccc","c"};
batchAddlist.add(o1);
batchAddlist.add(o2);
batchAddlist.add(o3);
bookservice.batchAddbook(batchAddlist);
二、批量修改操作
//1.编写bookDao接口
public interface bookDao {
//批量修改操作
void batchupdate(List<Object[]> batchAddlist);
}
//2.编写接口实现类bookDaoImple
@Repository
public class bookDaoImple implements bookDao{
//注入JdbcTemplate
@Autowired
private JdbcTemplate jdbcTemplate;
//批量修改操作
@Override
public void batchupdate(List<Object[]> batchAddlist) {
String sql = "update book set bookname=?,bookstatus=? where bookid=?";
int[] ints = jdbcTemplate.batchUpdate(sql, batchAddlist);
System.out.println(Arrays.toString(ints));
}
}
//3.编写service类
@Service
public class bookService {
//1.注入dao
@Autowired
private bookDao bookdao;
//实现批量修改
public void batchupdate(List<Object[]> batchAddlist){
bookdao.batchupdate(batchAddlist);
}
}
//4.编写测试类
//批量修改
List<Object[]> batchAddlist = new ArrayList<>();
//注意数组中值的顺序要对应sql中参数出现的顺序
Object[] o1 = {
"aaa111","a1","5"};
Object[] o2 = {
"bbb222","b2","6"};
Object[] o3 = {
"ccc333","c3","7"};
batchAddlist.add(o1);
batchAddlist.add(o2);
batchAddlist.add(o3);
bookservice.batchupdate(batchAddlist);
三、批量删除操作
//1.编写bookDao接口
public interface bookDao {
//批量删除操作
void batchDelete(List<Object[]> batchAddlist);
}
//2.编写接口实现类bookDaoImple
@Repository
public class bookDaoImple implements bookDao{
//注入JdbcTemplate
@Autowired
private JdbcTemplate jdbcTemplate;
//批量删除操作
@Override
public void batchDelete(List<Object[]> batchAddlist) {
String sql = "delete from book where bookid=?";
int[] ints = jdbcTemplate.batchUpdate(sql, batchAddlist);
System.out.println(Arrays.toString(ints));
}
}
//3.编写service类
@Service
public class bookService {
//1.注入dao
@Autowired
private bookDao bookdao;
//实现批量删除
public void batchdelete(List<Object[]> batchAddlist) {
bookdao.batchDelete(batchAddlist);
}
}
//4.编写测试类
//批量删除
List<Object[]> batchAddlist = new ArrayList<>();
Object[] o1 = {
"5"};
Object[] o2 = {
"6"};
Object[] o3 = {
"7"};
batchAddlist.add(o1);
batchAddlist.add(o2);
batchAddlist.add(o3);
bookservice.batchdelete(batchAddlist);